CVE-2026-116326

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116326", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-10-26T03:52:44.053Z", "datePublished": "2026-11-12T14:15:15.067Z", "dateUpdated": "2026-11-12T14:15:15.067Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-11-12T14:15:15.067Z"}, "title": "PostgreSQL plperl tied-object exceptions follow stale sigjmp_buf", "x_postgresql": {"component": "core server"}, "descriptions": [{"lang": "en", "value": "Uncaught exceptions in PostgreSQL plperl allow an object creator to cause use of a stale sigjmp_buf, via a tied Perl object, or a Perl object whose overloaded conversion throws while plperl is handling another error. We have not ruled out arbitrary code execution on some platform. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected."}], "affected": [{"defaultStatus": "unaffected", "product": "PostgreSQL", "vendor": "n/a", "versions": [{"lessThan": "18.7", "status": "affected", "version": "18", "versionType": "rpm"}, {"lessThan": "17.12", "status": "affected", "version": "17", "versionType": "rpm"}, {"lessThan": "16.16", "status": "affected", "version": "16", "versionType": "rpm"}, {"lessThan": "15.20", "status": "affected", "version": "15", "versionType": "rpm"}, {"lessThan": "14.25", "status": "affected", "version": "0", "versionType": "rpm"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-672", "type": "CWE", "description": "Operation on a Resource after Expiration or Release"}]}], "references": [{"url": "https://www.postgresql.org/support/security/CVE-2026-116326/"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "configurations": [{"lang": "en", "value": "Attacker has permission to \"CREATE EXTENSION plperl\", or another user previously issued that. Attacker has permission to create objects (temporary objects or non-temporary objects in at least one schema)."}], "credits": [{"lang": "en", "value": "The PostgreSQL project thanks Dwij Mehta, Ngoc Tr\u1ea7n, and Anthropic OSS program for reporting this problem."}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "PostgreSQL", "vendor": "n/a", "versions": [{"lessThan": "18.7", "status": "affected", "version": "18", "versionType": "rpm"}, {"lessThan": "17.12", "status": "affected", "version": "17", "versionType": "rpm"}, {"lessThan": "16.16", "status": "affected", "version": "16", "versionType": "rpm"}, {"lessThan": "15.20", "status": "affected", "version": "15", "versionType": "rpm"}, {"lessThan": "14.25", "status": "affected", "version": "0", "versionType": "rpm"}]}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Uncaught exceptions in PostgreSQL plperl allow an object creator to cause use of a stale sigjmp_buf, via a tied Perl object, or a Perl object whose overloaded conversion throws while plperl is handling another error. We have not ruled out arbitrary code execution on some platform. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected."}], "id": "CVE-2026-116326", "lastModified": "2026-11-12T19:02:35.830", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}, "published": "2026-11-12T15:17:41.077", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "url": "https://www.postgresql.org/support/security/CVE-2026-116326/"}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-672"}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}

{"bugzilla": {"description": "postgresql: postgresql: Arbitrary code execution via uncaught exceptions in PL/Perl", "id": "2572540", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2572540"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in PostgreSQL. An authenticated user with permissions to create database objects can exploit uncaught exceptions within the PL/Perl language extension by supplying a crafted Perl object while an existing error is being handled. This issue leads to the reuse of stale memory buffers, potentially resulting in arbitrary code execution or a Denial of Service (DoS)."], "mitigation": {"lang": "en:us", "value": "Disable or restrict access to the PL/Perl extension in affected databases, or remove the optional PL/Perl package if not required.\n1. Restrict PL/Perl language usage from untrusted database roles:\n```sql\nREVOKE USAGE ON LANGUAGE plperl FROM PUBLIC;\nREVOKE USAGE ON LANGUAGE plperlu FROM PUBLIC;\n```\n2. If PL/Perl is not required, drop the extension from affected databases:\n```sql\nDROP EXTENSION IF EXISTS plperl CASCADE;\nDROP EXTENSION IF EXISTS plperlu CASCADE;\n```\n3. Optionally, remove the RPM package providing the language integration:\n```bash\ndnf remove postgresql-plperl\n```\nCaveats:\nRevoking access or dropping the extension will break existing database stored procedures and functions that rely on PL/Perl.\nWarning:\nDatabase-level privilege and extension changes do not require restarting the postgresql service, but active client sessions should be terminated to enforce privilege revocations immediately."}, "name": "CVE-2026-116326", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "libpq", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "postgresql17", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "postgresql18", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-11-12T14:15:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-116326\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-116326\nhttps://www.postgresql.org/support/security/CVE-2026-116326/"], "statement": "This vulnerability is rated as Important severity because an authenticated database user with privileges to execute or define PL/Perl functions could achieve arbitrary code execution within the context of the PostgreSQL backend process. However, the PL/Perl procedural language is an optional component that is not enabled by default on standard Red Hat Enterprise Linux PostgreSQL deployments. Environments that do not install the optional plperl subpackage or grant untrusted users access to PL/Perl are not exposed to this flaw.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18,18.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[17,17.12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[16,16.16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15,15.20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,14.25)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "PostgreSQL", "source": "cna", "vendor": "n/a"}, "product": "postgresql", "vendor": "postgresql"}], "created": "2026-11-12T23:45:10.755850+00:00", "updated": "2026-11-13T05:45:15.828725+00:00", "vendors": ["postgresql", "postgresql$PRODUCT$postgresql"]}